A circulation fan with an outlet rectifying vane structure and a machining method

Abstract

The application discloses a circulating fan with an outlet rectification guide vane structure and a machining method, and belongs to the technical field of circulating fans. The circulating fan with the outlet rectification guide vane structure and the machining method comprise a fan shell, a connecting shell is fixedly installed on the upper end of the fan shell, an installation ring is fixedly installed on one side of the fan shell, a connecting frame is installed in the fan shell, and a limiting seat is fixedly connected to the connecting frame. A fan blade cleaning assembly is fixedly installed on the limiting seat, a circulating fan assembly is arranged below the fan blade cleaning assembly, and a rectification structure is arranged on the outer side of the fan shell. The circulating fan assembly and the fan blade cleaning assembly are designed in a matched mode, the angle of the fan blade is steplessly and accurately adjusted, different working conditions can be adapted without replacing the fan, dust and oil stains on the surface of the fan blade can be automatically cleaned by using the cleaning sponge in the cleaning frame, the service life of the fan is prolonged, and the equipment maintenance difficulty is reduced.

Description

Technical Field

[0001] This invention belongs to the field of circulating fan technology, specifically relating to a circulating fan with an outlet rectifier guide vane structure and a machining method thereof. Background Technology

[0002] As a key piece of equipment widely used in industrial ventilation, air conditioning systems, drying equipment, and cooling devices, the performance of circulating fans directly affects system energy consumption, operational stability, and effectiveness. With increasing demands for energy conservation and emission reduction, and growing complexity of operating conditions, higher requirements are placed on the flexibility of adjustment, operational efficiency, and ease of maintenance of circulating fans. Currently, the blades of traditional circulating fans are typically fixed to the hub, and the blade installation angle is determined at the factory and cannot be adjusted during use. When system conditions change, such as fluctuations in wind resistance or adjustments to airflow demand, the airflow can often only be changed by adjusting the motor speed using a frequency converter or by throttling a valve. While frequency converters can achieve stepless adjustment, they are expensive, and motor heat dissipation is poor at low speeds; valve throttling results in significant energy loss and poor economic efficiency. Although some fans employ adjustable blade designs, they are mostly graded adjustments, unable to achieve continuous and precise adjustment at any angle, making it difficult to meet the needs of refined operating conditions.

[0003] Meanwhile, during long-term operation, dust, oil, and other impurities easily accumulate on the surface of the fan blades. These deposits not only increase blade mass and disrupt dynamic balance, leading to increased vibration and accelerated bearing wear, but also alter the aerodynamic shape of the blades, reducing fan efficiency and increasing energy consumption. Traditional cleaning methods require manual disassembly of the fan casing or blades after shutdown, which is cumbersome, time-consuming, and prone to damaging components during disassembly. For circulating fans installed in confined spaces or at high altitudes, cleaning is even more difficult, often resulting in neglect due to inconvenient maintenance, thus accelerating equipment aging. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a circulating fan with an outlet rectifier guide vane structure and a machining method thereof.

[0005] The technical solution adopted to solve the above technical problems is: a circulating fan with an outlet rectifier guide vane structure, including a fan housing, a connecting housing fixedly installed at the upper end of the fan housing, an installation ring fixedly installed on one side of the fan housing, a connecting frame installed inside the fan housing, a limiting seat fixedly connected to the connecting frame; a fan blade cleaning assembly fixedly installed on the limiting seat, a circulating fan assembly arranged below the fan blade cleaning assembly, and a rectifier structure arranged on the outside of the fan housing.

[0006] Furthermore, the rectification structure includes a rectification seat fixedly installed to the inner wall of the fan housing, and multiple sets of rectification guide vanes are evenly arranged on the inner circumference of the rectification seat, with the multiple sets of rectification guide vanes fixedly installed to the rectification seat.

[0007] Through the above technical solution, the rectifier guide vanes are arranged at a specific angle to guide the rotating airflow, convert the tangential velocity component of the airflow into axial velocity, so that the outlet airflow is restored to pure axial flow, reducing airflow rotation loss, improving the effective power output of the fan, and making the outlet airflow velocity distribution more uniform. In addition, the rectifier guide vanes, through the guiding effect of the guide vane profile, convert vortex energy into pressure energy, reducing flow loss.

[0008] Furthermore, a support frame is symmetrically fixedly connected to the lower end of the fan housing, and air inlets are symmetrically opened on both sides of the fan housing.

[0009] Furthermore, the circulating fan assembly includes a drive motor connected to the connecting frame, a drive shaft fixedly connected to the output end of the drive motor, a fixed connection between the drive shaft and the fan head, a plurality of connecting seats arranged circumferentially on the fan head, the plurality of connecting seats being rotatably connected to the fan head, a fan blade fixedly connected to the connecting seat, a connecting rod rotatably connected to the connecting seat, and a connecting rod rotatably connected to a connecting ring at the end of the connecting rod away from the connecting seat.

[0010] Through the above technical solution, the drive motor drives the fan head to rotate through the drive shaft, and the fan head drives the inclined fan blades to rotate through the connecting seat, so that the circulating fan can rotate normally.

[0011] Furthermore, a first electric telescopic rod is symmetrically fixedly connected to the connecting frame. The output end of the first electric telescopic rod is fixedly connected to one side of the fixed base. A positioning ring is fixedly installed on the fixed base. A connecting ring is provided on the outer wall of the positioning ring. The positioning ring and the connecting ring are rotatably connected.

[0012] With the above technical solution, when it is necessary to adjust the air volume and air pressure of the fan, the output end of the first electric telescopic rod drives the fixed seat to move. The fixed seat drives the connecting ring to move through the fixing with the positioning ring. The connecting ring drives the connecting seat to rotate through the connecting rod, so that the rotation angle of the fan blades can be adjusted as needed, allowing the fan blades to be adjusted to any angle of tilt.

[0013] Furthermore, the fan blade cleaning assembly includes a mounting part rotatably connected to a limiting seat. A second electric telescopic rod is fixedly mounted on one end of the mounting part. A fixing part is fixedly connected to the end of the second electric telescopic rod away from the mounting part. The fixing part is rotatably connected to a mounting support rod. A mounting shaft is fixedly connected to the limiting seat. The mounting shaft is rotatably connected to the mounting support rod. A cleaning frame is fixedly connected to one side of the mounting support rod.

[0014] Furthermore, the mounting support rod is L-shaped, and a cleaning sponge is fixedly connected to the inner wall of the cleaning frame.

[0015] Through the above technical solution, the output end of the second electric telescopic rod drives the fixed part to move, and the fixed part drives the sweeping frame to rotate through the mounting support rod, so that the fan blades are between the sweeping frames. The power of the drive motor is turned on, so that the drive motor drives the drive shaft to rotate. The drive shaft drives the fan blades on the connecting seat to rotate through the fan head, so that the cleaning sponge inside the sweeping frame sweeps away the dust stuck on the fan blades.

[0016] The beneficial effects of this invention are as follows:

[0017] (1) This invention designs a matching circulating fan assembly and a fan blade cleaning assembly. The extension and retraction of the first electric telescopic rod drives the connecting ring to move, thereby driving the connecting rod to push the connecting seat to rotate, realizing stepless and precise adjustment of the fan blade angle. The fan blade can be adjusted to any tilt angle according to the actual air volume and air pressure requirements. It can adapt to different working conditions without replacing the fan, greatly improving the equipment adaptability and operational flexibility. The adjustment process does not require stopping the machine, and dynamic adjustment can be realized, ensuring the continuity of system operation and reducing the efficiency loss caused by working condition switching. At the same time, the second electric telescopic rod drives the cleaning frame to rotate and wrap the fan blade. Then, the drive motor is started to drive the fan blade to rotate. The cleaning sponge in the cleaning frame can automatically clean the dust, oil and other impurities on the surface of the fan blade. No manual disassembly is required. The operation is simple and convenient, avoiding problems such as reduced fan efficiency and increased vibration caused by the accumulation of impurities, extending the service life of the fan, and reducing the difficulty of equipment maintenance.

[0018] (2) By designing a rectification structure, the rectification guide vanes are arranged at a specific angle to guide the rotating airflow, converting the tangential velocity component of the airflow into axial velocity, so that the outlet airflow is restored to pure axial flow, reducing airflow rotation loss, improving the effective power output of the fan, and making the outlet airflow velocity distribution more uniform. In addition, the rectification guide vanes, through the guiding effect of the guide vane profile, convert vortex energy into pressure energy, reducing flow loss. They can also significantly reduce the noise generated during the operation of the circulating fan, reduce the excitation of the fan casing and connecting casing by airflow pulsation, thereby extending the service life of the equipment, reducing casing deformation and vibration during operation, and improving system stability. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is an internal structural diagram of the fan housing of the present invention;

[0021] Figure 3 This is a cross-sectional structural view of the fan casing of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the circulating fan assembly of the present invention;

[0023] Figure 5 This is an exploded structural diagram of the circulating fan assembly of the present invention;

[0024] Figure 6 This is a cross-sectional view of the circulating fan assembly of the present invention.

[0025] Figure label:

[0026] 1. Fan casing; 11. Connecting casing; 12. Mounting ring; 13. Support frame; 14. Air inlet; 15. Connecting frame; 16. Limiting seat;

[0027] 2. Rectifier structure; 21. Rectifier base; 22. Rectifier guide vanes;

[0028] 3. Circulating fan assembly; 31. Drive motor; 32. Drive shaft; 33. Fan head; 34. Connecting seat; 35. Fan blades; 36. Connecting rod; 37. Connecting ring; 38. Positioning ring; 39. Fixed seat; 310. First electric telescopic rod;

[0029] 4. Fan blade cleaning assembly; 41. Mounting part; 42. Second electric telescopic rod; 43. Fixing part; 44. Mounting support rod; 45. Mounting shaft; 46. Sweeping frame; 47. Cleaning sponge. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1-3 As shown, a circulating fan with an outlet rectifier guide vane structure according to this embodiment includes a fan housing 1. A connecting housing 11 is fixedly installed on the upper end of the fan housing 1. An installation ring 12 is fixedly installed on one side of the fan housing 1. A connecting frame 15 is installed inside the fan housing 1. A limiting seat 16 is fixedly connected to the connecting frame 15. A fan blade cleaning assembly 4 is fixedly installed on the limiting seat 16. A circulating fan assembly 3 is arranged below the fan blade cleaning assembly 4. A rectifier structure 2 is arranged on the outer side of the fan housing 1. The rectifier structure 2 includes a rectifier seat 21 fixedly installed to the inner wall of the fan housing 1. The inner circumference of the rectifier seat 21 is evenly distributed... Multiple sets of rectifier guide vanes 22 are evenly arranged and fixedly installed with the rectifier base 21. The rectifier guide vanes 22 are arranged at a specific angle to guide the rotating airflow, convert the tangential velocity component of the airflow into axial velocity, so that the outlet airflow is restored to pure axial flow, reducing airflow rotation loss, improving the effective power output of the fan, and making the outlet airflow velocity distribution more uniform. In addition, the rectifier guide vanes 22 convert vortex energy into pressure energy through the guiding effect of the guide vane profile, reducing flow loss. The fan casing 1 is symmetrically fixedly connected to the lower end of the fan casing 1, and air inlets 14 are symmetrically opened on both sides of the fan casing 1.

[0032] like Figures 1-6 As shown, the circulating fan assembly 3 includes a drive motor 31 connected to the connecting frame 15. The output end of the drive motor 31 is fixedly connected to a drive shaft 32. The drive shaft 32 is fixedly connected to the fan head 33. Multiple connecting seats 34 are arranged circumferentially on the fan head 33. The multiple connecting seats 34 are rotatably connected to the fan head 33. Fan blades 35 are fixedly connected to the connecting seats 34. A connecting rod 36 is rotatably connected to the connecting seats 34. The end of the connecting rod 36 away from the connecting seats 34 is rotatably connected to a connecting ring 37. The drive motor 31 drives the fan head 33 to rotate through the drive shaft 32. The fan head 33 drives the inclined fan blades 35 to rotate through the connecting seats 34, so that the circulating fan can rotate normally.

[0033] like Figures 1-6 As shown, a first electric telescopic rod 310 is symmetrically fixedly connected to the connecting frame 15. The output end of the first electric telescopic rod 310 is fixedly connected to one side of the fixed base 39. A positioning ring 38 is fixedly installed on the fixed base 39. A connecting ring 37 is provided on the outer wall of the positioning ring 38. The positioning ring 38 and the connecting ring 37 are rotatably connected. When it is necessary to adjust the air volume and air pressure of the fan, the output end of the first electric telescopic rod 310 drives the fixed base 39 to move. The fixed base 39 drives the connecting ring 37 to move through the fixation between it and the positioning ring 38. The connecting ring 37 drives the connecting base 34 to rotate through the connecting rod 36, so that the rotation angle of the fan blade 35 can be adjusted as needed, so that the fan blade 35 can be adjusted to any angle of tilt.

[0034] like Figures 1-3 Figures 1-3 As shown, the fan blade cleaning assembly 4 includes a mounting part 41 rotatably connected to the limiting seat 16. A second electric telescopic rod 42 is fixedly mounted on one end of the mounting part 41. A fixing part 43 is fixedly connected to the end of the second electric telescopic rod 42 away from the mounting part 41. The fixing part 43 is rotatably connected to the mounting support rod 44. A mounting shaft 45 is fixedly connected to the limiting seat 16. The mounting shaft 45 is rotatably connected to the mounting support rod 44. A cleaning frame 46 is fixedly connected to one side of the mounting support rod 44. The mounting support rod 44 is L-shaped and is used for cleaning. A cleaning sponge 47 is fixedly connected to the inner wall of the frame 46. The output end of the second electric telescopic rod 42 drives the fixed part 43 to move. The fixed part 43 drives the sweeping frame 46 to rotate through the mounting support rod 44, so that the fan blades 35 are positioned between the sweeping frames 46. The power of the drive motor 31 is turned on, so that the drive motor 31 drives the drive shaft 32 to rotate. The drive shaft 32 drives the fan blades 35 on the connecting seat 34 to rotate through the fan head 33, so that the cleaning sponge 47 inside the sweeping frame 46 cleans the dust stuck on the fan blades 35.

[0035] The machining method for a circulating fan with an outlet rectifier guide vane structure includes the following specific steps:

[0036] Step 1: The drive motor 31 drives the fan head 33 to rotate through the drive shaft 32. The fan head 33 drives the inclined fan blades 35 to rotate through the connecting seat 34, so that the circulating fan can rotate normally.

[0037] Step 2: When it is necessary to adjust the air volume and air pressure of the fan, the output end of the first electric telescopic rod 310 drives the fixed base 39 to move. The fixed base 39 drives the connecting ring 37 to move through the fixing with the positioning ring 38. The connecting ring 37 drives the connecting base 34 to rotate through the connecting rod 36, so that the rotation angle of the fan blade 35 can be adjusted as needed, so that the fan blade 35 can be adjusted to any angle of tilt.

[0038] Step 3: When it is necessary to clean the fan blades 35, rotate each fan blade 35 until they are on the same plane. The output end of the second electric telescopic rod 42 drives the fixed part 43 to move. The fixed part 43 drives the cleaning frame 46 to rotate through the mounting support rod 44, so that the fan blades 35 are between the cleaning frames 46. Turn on the power of the drive motor 31, so that the drive motor 31 drives the drive shaft 32 to rotate. The drive shaft 32 drives the fan blades 35 on the connecting seat 34 to rotate through the fan head 33, so that the cleaning sponge 47 inside the cleaning frame 46 can clean the dust stuck on the fan blades 35.

[0039] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "setting," and "forming" should be interpreted broadly; for example, they can refer to fixed connections or settings, detachable connections or settings, or integrated structures; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two components; those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In the description of this invention, references to terms such as “embodiment,” “specific example,” or “practical application” indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment is included in at least one embodiment or example of the invention; the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example, and the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0042] The above embodiments are only used to illustrate the technical solutions of the present invention. Those skilled in the art should understand that the above embodiments do not limit the present invention in any way. All technical solutions obtained by equivalent substitution or equivalent transformation fall within the protection scope of the present invention.

Claims

1. A circulating fan with an outlet rectifier guide vane structure, comprising a fan casing (1), characterized in that, A connecting housing (11) is fixedly installed on the upper end of the fan housing (1), an installation ring (12) is fixedly installed on one side of the fan housing (1), a connecting frame (15) is installed inside the fan housing (1), and a limiting seat (16) is fixedly connected to the connecting frame (15). A fan blade cleaning assembly (4) is fixedly installed on the limiting seat (16), a circulating fan assembly (3) is provided below the fan blade cleaning assembly (4), and a rectifier structure (2) is provided on the outside of the fan housing (1).

2. The circulating fan with an outlet rectifier guide vane structure according to claim 1, characterized in that, The rectification structure (2) includes a rectification seat (21) fixedly installed on the inner wall of the fan housing (1). Multiple sets of rectification guide vanes (22) are evenly arranged on the inner circumference of the rectification seat (21), and the multiple sets of rectification guide vanes (22) are fixedly installed on the rectification seat (21).

3. The circulating fan with an outlet rectifier guide vane structure according to claim 1, characterized in that, The fan housing (1) is symmetrically fixedly connected to a support frame (13) at the lower end, and air inlets (14) are symmetrically opened on both sides of the fan housing (1).

4. The circulating fan with an outlet rectifier guide vane structure according to claim 1, characterized in that, The circulating fan assembly (3) includes a drive motor (31) between the drive motor (31) and the connecting frame (15). The output end of the drive motor (31) is fixedly connected to a drive shaft (32). The drive shaft (32) is fixedly connected to the fan head (33). The fan head (33) is provided with multiple connecting seats (34) around its circumference. The multiple connecting seats (34) are rotatably connected to the fan head (33). Fan blades (35) are fixedly connected to the connecting seats (34). A connecting rod (36) is rotatably connected to the connecting seats (34). The end of the connecting rod (36) away from the connecting seats (34) is rotatably connected to a connecting ring (37).

5. The circulating fan with an outlet rectifier guide vane structure according to claim 4, characterized in that, The first electric telescopic rod (310) is symmetrically fixedly connected to the connecting frame (15). The output end of the first electric telescopic rod (310) is fixedly connected to one side of the fixed seat (39). A positioning ring (38) is fixedly installed on the fixed seat (39). A connecting ring (37) is provided on the outer wall of the positioning ring (38). The positioning ring (38) and the connecting ring (37) are rotatably connected.

6. The circulating fan with an outlet rectifier guide vane structure according to claim 1, characterized in that, The fan blade cleaning assembly (4) includes a mounting part (41) rotatably connected to a limiting seat (16). A second electric telescopic rod (42) is fixedly mounted on one end of the mounting part (41). A fixing part (43) is fixedly connected to the end of the second electric telescopic rod (42) away from the mounting part (41). The fixing part (43) is rotatably connected to a mounting support rod (44). A mounting shaft (45) is fixedly connected to the limiting seat (16). The mounting shaft (45) is rotatably connected to the mounting support rod (44). A cleaning frame (46) is fixedly connected to one side of the mounting support rod (44).

7. The circulating fan with an outlet rectifier guide vane structure according to claim 6, characterized in that, The mounting support rod (44) is L-shaped, and a cleaning sponge (47) is fixedly connected to the inner wall of the cleaning frame (46).

8. A machining method for a circulating fan with an outlet rectifier guide vane structure according to any one of claims 1-7, characterized in that, The specific steps include the following: Step 1: The drive motor (31) drives the fan head (33) to rotate through the drive shaft 32. The fan head (33) drives the inclined fan blades (35) to rotate through the connecting seat 34, so that the circulating fan can rotate normally. Step 2: When it is necessary to adjust the air volume and air pressure of the fan, the output end of the first electric telescopic rod (310) drives the fixed seat 39 to move. The fixed seat 39 drives the connecting ring 37 to move through the fixing between it and the positioning ring 38. The connecting ring 37 drives the connecting seat 34 to rotate through the connecting rod 36, so that the rotation angle of the fan blade (35) can be adjusted as needed, so that the fan blade (35) can be adjusted to any angle of tilt. Step 3: When it is necessary to clean the fan blades (35), rotate until all fan blades (35) are on the same plane. The output end of the second electric telescopic rod 42 drives the fixed part 43 to move. The fixed part 43 drives the cleaning frame 46 to rotate through the mounting support rod (44), so that the fan blades 35 are between the cleaning frame 46. Turn on the power of the drive motor 31, so that the drive motor 31 drives the drive shaft 32 to rotate. The drive shaft 32 drives the fan blades 35 on the connecting seat 34 to rotate through the fan head (33), so that the cleaning sponge 47 inside the cleaning frame 46 cleans the dust stuck on the fan blades 35.

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